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Solve this simultaneous equation: (1) 2x+3y=12 (2) x+4y=11

x=3,y=2
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Answered by Safiya C. • Maths tutor
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Explain the use of Imperfekt and Perfekt, and give one example each.

The German tense of Imperfekt is used when describing situations that occured in the and which have no influence on the present. It is also used when talking about states and feelings in the past. Additional...
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Answered by Jeanette S. • German tutor
3677 Views

Describe the structure of proteins

Proteins have a primary, secondary, tertiary and quaternary structure. The primary structure comprises of the specific sequence of amino acids which are held together by peptide bonds. The secondary structur...
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Answered by Taran T. • Biology tutor
3575 Views

Explain an example of classical conditioning.

One of the most important studies into classical conditioning was done by Pavlov. In his experiment he aimed to prove how learning by association produces conditioned responses. To do this, he paired a neutr...
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Answered by Imogen E. • Psychology tutor
5037 Views

How do you solve simultaneous equations?

Simultaneous equations have two unknowns, you need to find out one of the unkowns (eg. x) in terms of the other (e.g. y) in order to solve both unknowns. Using these two examples (x and y) we can construct a...
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Answered by Charlie O. • Maths tutor
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